A. C. Gilbert Radio Tube Trick
This game is part of a set that A. C. Gilbert (the Erector Set people) of New Haven, Conn. made in the late 1920s or early 1930s. It depicts a very early luggage style portable radio. Your job is to get the movable BB weighted 'tubes' in their 'sockets' with the black side down. The 'radio' has four 'tubes'. The rest of the games in this series are puzzle type games that aren't much different from some still available today. This is the only 'radio' puzzle in the series.